<%@page contentType="text/html; charset=UTF-8" language="java" %> //主要解决中文乱码

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>声明变量和方法</title>
</head>
<body>
 <%!
     public int count;
     public String info(){

         return "hello";




     }
 %>
 <br>
<%
    out.println(count++);
%>
 <br>
 <%
     out.println(info());
 %>

</body>
</html>